Jan Wieck <[EMAIL PROTECTED]> writes:
> On 6/30/2006 11:17 AM, Marko Kreen wrote:
>> If the xxid-s come from different DB-s, then there can still be problems.
> How so? They are allways part of a multi-key index having the
> originating node ID first.
Really?
create table @[EMAIL PROTECTED] (
log_origin int4,
log_xid @[EMAIL PROTECTED],
log_tableid int4,
log_actionseq int8,
log_cmdtype char,
log_cmddata text
);
create index sl_log_1_idx1 on @[EMAIL PROTECTED]
(log_origin, log_xid @[EMAIL PROTECTED], log_actionseq);
create index sl_log_1_idx2 on @[EMAIL PROTECTED]
(log_xid @[EMAIL PROTECTED]);
sl_log_1_idx2 doesn't seem to have any such protection. When I was
poking at Marc's example, though, it seemed that the numbers going
into the table were all *locally generated* XIDs, in fact the same
as the XID doing the insertions. If this is only true on the master,
and slaves can be inserting XIDs coming from different masters,
then I think it will break.
regards, tom lane
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